Reversing mechanism for locomotives.



PATENTBD MAY 7, 1907.

C, J. MELLIN. REVERSING MECHANISM FOR LOCOMOTIVES.

APPLICATION FILED DEC.5.1906.

5 SHBETS-SHBBT 1.

PATENTED MAY 7, 1907. O. J. MELLIN. REVERSING MECHANISM FOR LOCOMOTIVES.APPLICATION FILED DEC. 5, 1906.

5 SHEETS-SHEET z Fl G. 4.

wn'm sssss No. 852,445. PATENTED MAY 7, 1907. G- J. MELLIN. RBVERSINGMECHANISM FOR EOCOMOTIVES.

'AzPPLIOA'TION FILED DEO.5,1906.

5 SHEETS-SHEE'P 3.

' FIG. 8.

FIG. 6.

FIG.7.

WITNESSES PATENTED MAY 7, 1907. 0. J. MELLIN. REVERSING MECHANISM FORLOCOMOTIVES,

APPLICATION FILED DEO.51906.

5 SEIIETS8HEBT 4.

No. 852,445. PATENTED MAY 7, 1907. .0. J. MBLLIN.

REVBRSING MECHANISM FOR LOCOMOTIVES.

APPLICATION FILED DBC.5.1906.

5 SHEETS-SHEET 5.

FIE-3.52.

FIGIS. v

WITNESSEfi mzz Q Y out off either manually or sutonmticsll order toenable any valvenetuatr 5 actuating mechanism mounted on. s swivel- CARLJ. MELLIN, OF

hpphnn To all whom it Lori rig. our; Be it known thst i.

Schenectady, in. the colmtj. m S and State of Now York, hrs 0 1m.

ing Mechanism lul iioeon'iotj o and om gines, of which improvement aspecification.

My invention relates to means tor re and other engines and viirving thepop cut' 'oil' therein. ordinarily lznoxvn as rr-m 111g gears orreversing mechanism object is to provide 9. lluirl wt nl type i shall becapable also of hoing manna era/ted, if desired, in Whirl; the Sti'OUlj"crating fhml to the motor shrill be. a manually scion-toil operatingjni-i-zehmr- ';;sn1, o'r a plurality thereof, howoverhoa vr 'or they maybe, to he moved to tho rli. 3o

position 'for operation, by the engineer, as} l plying the power oronehand only, and both the operating lever and the main 1'01 throughwhich the power of the motor transmitted tothe vnlv. -ua-r, tobe ioelml,when moved to the desire lic pressure.

My invention is turther ilosignii-ii to pro-- vidQ eil'ectivo andoonvenii'mt means for c m i necting the reversing nioclmnism with ingtruck or bogie i'ranie, -i n 511th manner that the transmission oimovrmvnt to the min actuating mechanism may be effected vvithoutdisturbance or impairment by the lateral '0. movement 01 the truck.

he improvement claimed hersinatir' fully set forth.

In the acooinpzniying ilrmvingsz Figure l i -a side View, psi-tiinsertion, of nreversing r5.me"chanisrn illustrating an embodiment ol'5o reverse lever, detiiohvrl Fig. -l, :1 Sllilllhl' view .of theoperating reverse levor; Fig. 6, n. sirle vie-W, in elevation and on anenlarged srnle of portions of the main snrl the operating re E verselevers, both being shown as latehiril or in locked position; Fig. 6, itsimilar view oi' the same, both lovers been; shown as ona i i rlposition, both by 1 0 en 'a. ement with 'hxrrl stuns anil hvlrr lrs1iandthe rit-versing 111111;;

v. UUcnLLiUlZ, and the 0])- moved out) of line with 7 :1 I- i!) lg-irviov; n the smile posiisin rovirsr; lover being inroperstingg reverselover out; 8, o rrnr \lCfi, on the some of wirtirms f the main and thooprrnt- "Iv e ,hothluvcrsbeingunlntrhml; ii in (torn-(ion snrl'partlyorlgion, of tho motor lot-lung: e 'limlei; l 10, in. trans-- il, l1through tho motor uvlinilor; :2 similar? s i'tion. through the hyvaasuroor lorlaiinr ovliniisr: i2, 3 in elevation, ot the QJlllltCliOllS sing;iME-ijllztlllrflll with 21. valve iilusirn'rin; tho flexii i, atransverse section through a lifting: link and :1 phm view of radius barof the viilvo urinating mochan mg the iiniwrsnl joint ronno tion I. J,:1 ti'sii: .'r1'si section, on an mi. sralo. Throiu. b; joint of the s1k; mil, Fig. 15,21 l-cin qiti ilinirl rlion tliroiigh. the some.

in tho prsotiro of my invention, l provide it main. reviuso h 17, whichis fixed to a. hub or boss, l1. jUlU'ilfLlPtl in bmrings looom'cnienlpro. to Us posi- "'l the 5 when operats in, as, for example, on or under=lstr ol' n looornotive vng'inu, The manner 01' mounting, the hub is"ore of in invmition, it being vorsing shift, by being t ttoii. in. ii,recess in an villi/[i i hr: jdtllilLIl-Jrl so as to be arm, 17*projecting from the hub, and seenrod. trorein by holis, 17'. A roversingarn'i, m is also lixorl upon the roi 'orsing shaft, 18, preferably bybeing 'lorrnerl integral with the hub, 17; tl'n'ongh which it isooi'ineotmi with the main reverse lever, 17, its movements about theaxial llllr: oi the re versing shalt bei' thus cruised to be coincidentwith those 1 2' the main reverse lever. The t -str p arm. 19. connectedby a reach red, 18 with one of the arins of abell erenlr or double armedlifting lever, 22, which is journeled to oscillate about the axial lineof a support at the junction of its arms, and

to be moved in reversing or varying the.

point of cut oil, as, ior'exarnple, the radius bar of a Nelsehaert valvegear.

An operating reverse lever, 24, is pivoted, by 2, pin, 24, to the mainreverse lever, 17, so as to be either movable therewith in an are aboutthe axial lineof the reversing shaft, or independently movable about theaxial line of its pivot pin, 24 The ope-rub ing reverse lever, 24,extends downwardly below its pivot pin, and has an eye in its lower endnormally concentric with the axis of movement of the main reverse lever,17, to reeeive a pin by which it is coupled to a link, 25, forconnection to the distribution valves of a motor and a hydrauliccylinder, are presently to be described The main re verse lever, isconnected, through the reversing mm, 18 end link, 18, coupled thereto,with the piston. 30 of iluid pres-- sure motor, 30, fixed to at suitableSliplnfil? in a plane parallel with the plane in which the reverselevers traverse, and, as above de scribed, is conneeted, through thereversing ztrrn end the reach rod, '18", with the valve actuatingineclnmisiu lllovernent of the motor piston, 30", in either direot-ion,wi l,"

thcreim'c, eoineidently sud correspondingly move the main reverselever,l7, Whieh, through its conueetions hehne described, will impart thenurvcinent to the member of the vulve actuating ,initlltlllisill whichis required for reversing, or for varying: the point of but oil. Theoperating: reversing levu', 24, is coupled by links, '25 and 26, to anarm, 32", on a three way distribution valve, 32, eontrolling the supplyand exhaust of operating fluid under pressure to end from opposite sidesof the motor piston, 30, and to an arm, 33", on a Your way distributionvalve, 33. controlling the traverse ol' 'sulstentinlly inromplessilzlclluid, oil, lronione to the other side of a p ston, 31, working in uhydraulic pressure or lot-icing cylinder, 31, in

line. axially with the motor cylinder, the piston, 31, hours liXcd upon:in (.(lillsiflii of the piston rod, 30", ol' the motor cyliruler. 1

A qmidrzlit/comprising, in the insizinco shown, two burs, 7. 2T, eurwmiconcentriculiy with the rowby side at a suitable distunce above said peridcs, which are engug'ed by lcclh on sing halt, in. i iixed side shalt,the quudrnnt burs living provided with uplurnlity ol' notches errecesses :wn llHH up- 5 spring: latches connected to the mniu and on-(ruling levers, for the purpose oi n'mintuinin; said lovers in thediil'erent positions in which the main and operating reverse levers aresee side by side, it becomes necessary to form the 7o quzirdsnt of twohere, one for each lever, but

it will be obvious that if the portionsof the main undoperating reverselevers which extend above the bottom of the quadrantare disposed in thesome vertical longitudinal plane", 75 that is to say, set one in advenceof the other, H es, in some cases, is more convenient and tie-- sirable,the quadrant need have only a single bur. i

A sprin; latch, 28, having, on its lower 8 side, one or more teeth, 28,adapted to en gene the notches of the quadrant bar, 27, is fitted totraverse vertically in' a transverse recess in the main reverse lever17', and. e, I spring, 23", fitted. in a lateral recessin the 85, latch,act-s, when unresisted, to force its. teeth into engagement with thenotches'of the quadrant bar. -'lhe latch, 28, is coupled by a pin, 28,to the lower ends of links, 29*, the up er ends of which are, in turn,coupled 0, to a bell crank latch lever, 39, pivoted to the main reverselever, 17, near its upper end. The movement of the latch lever indirection. to WlilHliHW the teeth of the hitch from the notches of thequadrant, is opposed bye 95 spring, ZWKeonnected at its opposite ends tothe latch lever and to the mziin reverse lever respectively. The pin,28, by which the latch,

28. is coupled to the linlrs, 28, also carries on interlockingplate, 34,which is connected loo by bolts, 34, to the latch, 28, and is'provided,on its lower side. with a centre] interlocking tooth, 3-l and end stops,3%.

A spring hitch, 35, having, on its lower \ide= oneor more teeth, 35,adapted to-en-j r05 une the notches of the quadrant bar, 27*, is fittedto traverse vertiesllvon the operating reverse lever, 24', and a spring35", abuts, against a plate, 35%, connected to the latch,

35, and against an iibutment, 35, fixed ..on no the lever, 24, and acts,when unopposr d, to force the teeth of the latch. 35, into engagement.with the quadrant, 27'. The lttlfil1,35,

is coupled, by 11 pin 35", to the lower end of n liulc, 35", the u ipei'end of which is, in tu rn,. 1 15' coupled to u be i crank lutch'lever,37, pivotcd to the operating reverse lever, 2i, near ts upper end; Themovement of the latch i5 vex in direction to withdraw the teeth ofthehitch from theifiitchm of the quadrant, is 1:20

opposed by n sprin;z,-35, connected, at its opposite ends, to the hitchlever and to the open-ii ing reverse lover, respectively. Twointerlocking stops, so, are fixed on the operating reverse lever, 3-4,on the side r25 thereof'udioining the interlocking plate, 34.

i of the inuin reverse lev 1'. i7, said stops proiorting below theplate. 34, a shown in Fig. H. and being soured at such a distznn-enpnrtas to permit the tree vertical inovc nent of crating reverse lever, 24,in the the latch, 35, of the operating reverse lever between them in allpositions of said lever, .an to permit the interposition between them oftl -l interlcz iing tooth, 31 of the interlocking plate, when, and onlywhen, the main reverse lever and the operating: reverse lever t Jul. inllnc, it's iinlicstcd inv D 5, in which position the tworwii-rsc leversltI'tl interlocked, and both nniy he hitched or locked to, or Z, i 'l 1d from, the notches of the c ued in all other relative positions cl 1reverse lovers, the interlocking tooth, "1 will .stwiul above, and beprevented from dmviinvsrd movement by, one or the ct er of theiiitii-rloclzing stops,

' and t-l, and, consequently, the ii'iterloclaingg Pltti) connotbelowered to permit the hitching or locking of the nutin reverse lever toits quadrant her until the open ting lever is moved into line with themain rev lover, or vice verse, as shown in Fig to tl eir normal centerlines, when the interlocking: i'uUtll, 34', is free to pass down bet 1the interlocking stop, 36, and the d wnward movement of the latch,- 28,whiz i is lfil l ed for the loclqiin ol the main rev il'ierehypermitted. In the one )11 oi" the reversing niechcn isni above d bed,when the engineer de sires to reve se the direction of movement ol theengine or to vary the point of cut off, he first unlntches the operatinglev by pressing on the latch lever, :57, vrhii. raises the operating;lever latch, -which, in turn, raises the main. lever letch by nieitns ofit shoulder under the to itlniikl and then moves the 0pep ropri litedirection, until one of its intorloiu ing stops, 36, abuts against theadjacent and stop, 3st, of the interlocking plate of the main reverselever. This movement ol the opcrnting rcverse lever, through the links,end ill), and their connectio to the res .i'lYC valves moves thedis'tiimiion valve, .32, ot the I110- tor into position to admit niot wefluid to the motor, 30, on the side ol' the piston thereof proper tomove the lllztill reverse lever and its connections in the desireddirection, and moves the distribution valve, 33, of the by draulicpressure cylini'ler, 3-31, into proper position toiperinit the traverseof fluid in said cylinder, from one side of its piston to the other. Theinctonthereupon; through the link, 18, and reversing arm, 18, moves themain reverselever, 17,:1nd its connections, in the desired direction forreversing, or for varying the pointol? out ch, the case nniy be. 'Ihepressure of the engineers hand on the'lstt-ch lever, 29, of the mainreverse lever, can be released as soon es the operating reverse leverisnioved out of line with. the main rev'cr lever, as such movementbrings one iterlocliing stops. so. underneath the interloc iing tooth,l, on the piste connected to the 11min reverse lever, and therebyprevents said lever from being locked or latched to its quadrant burduring its traverse. The movement of the two reverse le-- vers, undtheirconnections, continues until the ninin reverse lever has been brought a070 the .lesirod position ,when the engineer moves the operating reverselever into nlinement with the main reverse lever, as indicated in Fig.5, and releases the pressure of his hand on the latch lever, 37, of theoperating rc. 75

verse lever. The interlocking tooth, 34", is then, by the pressureof thesprings, 28* and 2?), dropped into the space between the interlockingstops, 36, thereby interlocking the nisin and operating reverse levers,am the 80 tribution valves, 32 and 33, of the IDOFOI and 8 5 hydraulicpressure cylinders, so its to cutofi the supply of operating fluid fromthe motor end to automatically lock the piston thereof by preventing thepassage of the fluid from one side of the connected piston of the hy- 6drsulic pressure cylinder to the other. The reversing mechanism is, inthis manner, lirinly locked in adjusted position, both by theinechanicsl engagement of the latch teeth with the quadrant- :tnd/by thehydrau- 9 5 lie pressure in the locking cylinder, 31. The position ofthe distribution valves, 32 and 33 remains unchanged during the traverseof the interlocked main and operating reverse levers, as the axis of thepin connecting the op- 1c crating reverse lever, 24, and the link, 2-5,is substantially concentric with the axis of movement of the two lovers.

in case it is desired to actuate the reversing niecha inisni by hand, asinthe event of )0 any failure or derangement of the motor, the hitch,35, of the operating reverse lever, is moved out of the notches of'itsquadrant bar, and held out of engagement therewith in any suitablemanner, as by interposing a block 1 between it on d a shoulder on thelatch of the main reverse lever, or by inserting a pin and block underits lower ends. The main reverse lever can then be moved by theapplication oi both hands of the engineer, without 1 interference by, ormanipulation of, the oper sting reverse lever. lily invention isspecially and desirably applicable in locomotives of the "tlltit'ilbliited type, lIBNlhgiWO ai'rs or sets of cylinders, provided with iependent valve actuating mechanisms and located at the-front and nearthe middle portion of the locomo tive, respectively, the forwardcylinders be ing mounted on a front frame, constituting a truck or hogiewhich is pivoted to, and has the capacity of swiveling movementrelelively to, a rear frame on which the rear pair of cylinders and thereversing mechcnisniare Inonnted. in the cg. a en/cl the feversi Mingmechanism,

ing fiaochmiism owes 0i thzs "5111, the Cambie1 jo-urnaled to .ns {orcom uatingz mech- "in ated to i1n- 01 the valve ism of the rear 0 wforward reach rod, 12 '59 Om; 03 (he a hie aimed mm 211 [0 th 3i,

22 sunstan'i-ialiy 22, and journaled in Valve ale-mama m-schanis'cylinders, to a member of dius in connected by a lifti In 011191 toenaquiied for re 01 vazymg; the pay cut of? 1 0 b mp izvimi to theradius hm, without (12 xping or binding 0? the cmn- Lions m" atherdistuf [we due -10 H10 in lncn'mnoqts of tin Wont frmne whi rises 11wvalve actuating 11113 311211 1 the Tfidillf 21, is a man her, e1 1 0iH10 lifiuxq link 2- 1h 111g lever, y provides capamt r 01 (Hr and the14mm" link cou iod ball or unrve? its pvaiial axi 2 mm as, c0ntr011 \.1

per joint fr-znn turning, m fivem' against th? sidvs: radius Mn.- Thejoint the lifliug iink w" 1 I 21 pivot 31 12, 23, bin k to the 121W;:yui a pivu naimi at mrigl'ht 1 the pi coupling the if I on tlw radiusban, 21 and fi'iis sphPria-ul b-cwu'ihg '23, whii'h is in .1 hetWm-n a$01M, 23*. and Cap, 22% which (mrvspnmllngly curved, t bearing, and swatbeing connm'm-d i M lifting link by lmifs, 23*. it WEE] we awn that bythe fluxihh joints thus Xmwidwi, the cmnwvtion bvtvvvvn the 1m wvm' mmsaid E9 v: A

thormn, a mi m mprriz muvuradius bar, and the 'mn'mai *rnm'mmmi of ilar-T'PVLT'SG latter by MW Yormer. m2; be unnfl'vcivd 3.2g; v1 mmimHiz-g thethe latvszzl mmvvmvms of the {mm mm-0, 1, mi mgapiy and umsi Hm z-nmlm',couzmd 2115:; that then will b0 I'm 'wnzi 1 mwiiwnx ('uujpiindistribution vnl'v: Wiz'h undue vv'var bem'oen the 1%! in link. Fm finc-nus Tm r miius ha m a vain The i'cnium- M t 9 110mm sot im't'u Win01be novel and patvnmi) arse ie'ver, an I that of the motor, distributionvalves conl move about a pivotal axis, an operating retrolling the fluidsupply and exhaust of the motor and hydraulic pressure. cylinder,connections coupling the distribution valves with the opera-erg RCVCISQlever, and means for connecting the main reverse lever to a valveactuating mech nisrn.

6- In a reversing mechanism, the comhination of a main reverse lever, anoperating reverselever pivotally connected thereto, means forinterlocking the main and operating reverse levers, a fluid pressuremotor ada ted to impart movement about a. pivota axis to the mainreverse lever, a distribution valve controlling the fluid supply andexhaust of the motor, connections coupling the distribution valve withthe operating reverse lever, and means for connecting the main reverselever to a valve actuating mechanism.

7. In a reversing mechanism, the combination of a main reverse leverjournaled to move about a pivotal axis, an operating reverse leverpivotally connected to the main reverse lever and having an eye on oneof its ends substantially concentric with the axis thereof, a fluidpressure motor adapted to impart movement to the main reverse lover, adistribution valve controlling the fluid supply and exhaust ol' the.motor, a link coupled to the eye of the operating reverse lever and tothe distribution valve, and means for connecting the main reverse leverto a valve actuating mechanisnr 8. In a reversing mechanism, thecombiverse lever pivotally connected to the main reverse lever, a fixedquadrant provided with a plurality of notches or recesses, springlatches connected to the main and operating reverse levers and carryingteeth adapted to engage the quadrant notches, means for interlocking themain and operating reverse.

levers to permit the locking of the main rea verse lever to the quadrantwhen the two lovers are in alinement and prevent such locking when outof alincment, a lluid pressure motor adapted to impart movement to themain reverse lover, a distribution valve controlling the fluid supplyand exhaust ol' the motor, connections coupling the distribution valvewith the. operating reverse lever, and means for connecting the mainreverse lever to a valve actual ing mechanism.

9. In a reversing mechanism, the combination of a main reverse leverjournalcd to move about a pivotal axis, means for connecting said leverto a valve actuating mechanism, a lluid pressure motor adapted to impartmovement to the main reverse lever, an operating reverse, leverjournaled to move about a pivotal axis, means for nuw-ha-nicallyconnectim the main and operating reverse levers, am means for supplyingand exhausting motive fluid to and from the motor in and by themovements of the operating reverse lever about its pivotal axis.

CARL J. MELLIN.

W'itnesses J. Sxowmcn BELL, GEORGE H. Sonxnnoax.

